A SpaceX Falcon 9 rocket roars off the launch pad at Launch Complex 39A at NASA’s Kennedy Space Center in Florida at 1 a.m. EST on Thursday, Dec. 9, 2021, carrying NASA’s Imaging X-ray Polarimetry Explorer (IXPE) spacecraft. Photo credit: NASA/Kim Shiflett
3, 2, 1 … LIFTOFF! NASA’s Imaging X-Ray Polarimetry Explorer (IXPE) spacecraft lights up the early morning Florida sky as it roars off the launch pad at NASA’s Kennedy Space Center on the agency’s first dedicated mission to measuring X-ray polarization.
Sandra Connelly, deputy associate administrator for science at NASA Headquarters, stated during the mission’s prelaunch media conference: “Understanding our galaxy and our place in the universe is awe inspiring and we want to make sure that we’re inspiring the future generation of our scientists and engineers.”
IXPE is now on its way to play a part in doing just that. Stay right here on the blog, or tune in to NASA Television, the NASA app, or the agency’s website to watch the spacecraft and rocket eclipse more launch milestones.
Everything is looking great as NASA’s Imaging X-Ray Polarimetry Explorer (IXPE) spacecraft, aboard a SpaceX Falcon 9 rocket, prepares to launch into the sky from NASA’s Kennedy Space Center in Florida. We are now just about 5 minutes away from liftoff.
NASA Launch Director Tim Dunn reported the rocket is on internal power and it is ready to launch. Stage 1 launch load is complete.
NASA’s IXPE mission is set to launch from Kennedy Space Center at 1 a.m. EST. Image credit: NASA
In just about 10 minutes, the Falcon 9 rocket’s nine Merlin engines will roar to life, sending SpaceX’s Falcon 9 rocket and NASA’s Imaging X-Ray Polarimetry Explorer (IXPE) spacecraft into space. The rocket has been fueled with liquid oxygen and RP-1 – rocket-grade kerosene. The Falcon 9’s engines are chilling in preparation for launch.
Excitement is building as IXPE, NASA’s first dedicated mission to measuring X-ray polarization, nears launch. IXPE will study changes in the polarization of X-ray light through some of the universe’s most extreme sources, including black holes, dead stars known as pulsars, and more.
The weather outlook for NASA’s Imaging X-Ray Polarimetry Explorer (IXPE) launch from Kennedy Space Center remains outstanding. Weather officials with Cape Canaveral Space Force Station’s 45th Weather Squadron predict a greater than 90% chance of favorable conditions for liftoff of NASA’s first dedicated mission to measuring X-ray polarization.
Propellant load is underway, which eliminates IXPE’s 90-minute launch window.
“We have committed to this and we are committed to a T-zero at 1 a.m.,” said Mic Woltman of NASA Communications.
IXPE will study targets over a broad range of types of astronomical X-ray sources with emphasis on black holes and neutron stars.
The mission will accomplish, for the first time, high-sensitivity measurements of the polarization of X-rays coming from some of the most exciting types of astronomical objects – neutron stars and black holes.
The mission will accomplish, for the first time, imaging X-ray polarization measurements from extended objects such as exploded stars and jets attached to super-massive black holes.
The mission involves the first use of Kennedy’s Launch Control Center Firing Room 4 for the launch of an LSP mission.
IXPE is the second LSP mission to fly a previously flown Falcon 9 booster.
Stay right here for continued blog coverage, or tune in to NASA Television, the NASA app, or the agency’s website, which started at 12:30 a.m. EST, for live broadcast coverage of IXPE launch day activities. Launch is set for 1 a.m. EST from NASA’s Kennedy Space Center in Florida.
Liftoff, aboard a SpaceX Falcon 9 rocket from Kennedy’s Launch Complex 39A, is targeted for 1 a.m. EST. The Launch is managed by NASA’s Launch Services Program, based at Kennedy.
IXPE will study changes in the polarization of X-ray light through some of the universe’s most extreme sources, including black holes, dead stars known as pulsars, and more. The mission is NASA’s first dedicated to measuring X-ray polarization.
Tune in to NASA Television, the NASA app, or the agency’s website, starting at 12:30 a.m. EST for a live broadcast of the IXPE launch. Photo credit: SpaceX
Here is a look at some of the key milestones for today’s IXPE launch:
Mission Timeline (all times approximate) LAUNCH AND SPACECRAFT DEPLOYMENT Time Events
1 a.m. EST Liftoff
T+153 sec First stage main engine cutoff (MECO)
T+156 sec First and second stages separate
T+164 sec Second stage engine start 1 (SES-1)
T+220 sec Fairing deploy
8.1 min Second stage engine cutoff 1 (SECO-1)
28.7 min Second stage engine start 2 (SES-2)
29.8 min Second stage engine cutoff 2 (SECO-2)
33.3 min Spacecraft separation
66.7 min Second stage deorbit burn
IXPE’s launch from NASA’s Kennedy Space Center in Florida is now about 40 minutes away. Coverage of launch day activities will continue here on the blog. Also, tune in to NASA Television, the NASA app, or the agency’s website, starting at 12:30 a.m. EST for a live broadcast. Liftoff, from Kennedy’s Launch Complex 39A, is targeted for 1 a.m.
The weather outlook for today’s early morning launch of NASA’s Imaging X-Ray Polarimetry Explorer (IXPE) spacecraft from Kennedy Space Center is terrific. Weather officials with Cape Canaveral Space Force Station’s 45th Weather Squadron predict a 90% chance of favorable conditions for liftoff, with the cumulus cloud rule serving as the primary weather concern.
A collaboration between NASA and the Italian Space Agency, IXPE is NASA’s first mission dedicated to measuring X-ray polarization. Launch, which is managed by NASA’s Launch Services Program, based at Kennedy, is targeted for 1 a.m. EST from the Florida spaceport’s Launch Complex 39A.
Coverage of launch day activities will continue here on the blog throughout IXPE’s milestones. Also, tune in to NASA Television, the NASA app, or the agency’s website, starting at 12:30 a.m. EST for a live broadcast.
NASA’s IXPE spacecraft carries three state-of-the-art space telescopes with special polarization-sensitive detectors. Photo credit: SpaceX
NASA’s Imaging X-Ray Polarimetry Explorer (IXPE) mission sounds cool, and even has a catchy name. But what is IXPE’s goal and how did the project come about? Here is a more in-depth look at IXPE, NASA’s first satellite dedicated to measuring X-ray polarization.
IXPE is going to explore some of the most extreme and mysterious objects in the universe – including black holes and pulsars – and the X-rays they emit. It is the first mission that will map the polarization of many of these objects.
IXPE carries three state-of-the-art space telescopes with special polarization-sensitive detectors. Polarization is a property of light that holds clues to the environment from which the light originates. By providing the first-ever dedicated look at polarized X-rays, IXPE will help us discover the secrets of some of the most extreme cosmic objects of the universe: the remnants of supernova explosions, neutron stars and black holes in our galaxy, and super massive black holes at the centers of galaxies.
NASA selected IXPE as a Small Explorer mission in 2017. The IXPE project is a collaboration between NASA and the Italian Space Agency. NASA’s Marshall Space Flight Center in Huntsville, Alabama manages the IXPE mission. Ball Aerospace, headquartered in Broomfield, Colorado, manages spacecraft operations with support from the University of Colorado at Boulder.
NASA’s Goddard Space Flight Center in Greenbelt, Maryland, manages the Explorers Program for the agency’s Science Mission Directorate in Washington.
Stay right here for continuing blog coverage of Thursday’s 1 a.m. EST launch of IXPE from Space Launch Complex 39A at NASA’s Kennedy Space Center in Florida.
Tune in to NASA Television, the 
